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AboutThe products involve multiple fields such as plastics, composite materials, and functional materials, and are applied in areas such as rail transit, special equipment, new energy vehicles, and machinery manufacturing.
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ProductsThe products involve multiple fields such as plastics, composite materials, and functional materials, and are applied in areas such as rail transit, special equipment, new energy vehicles, and machinery manufacturing.
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BlogThe products involve multiple fields such as plastics, composite materials, and functional materials, and are applied in areas such as rail transit, special equipment, new energy vehicles, and machinery manufacturing.
Don’t Be Misled by the Word “Plastic”: Why MC Nylon Has the Strength to Replace Bronze Bushings in Many Applications
2025-12-31
When customers first encounter MC Nylon (Cast Nylon / PA6G), they often hesitate:
“Can plastic really handle heavy loads? My equipment weighs several tons.”
“If it’s used for gears, won’t it wear out very quickly?”
If your impression of “plastic” is limited to everyday consumer materials, you may be overlooking a major opportunity to reduce cost while protecting critical equipment components.
MC Nylon is not ordinary plastic—it is an engineering material designed for industrial duty.
1) MC Nylon Is Not “Soft Plastic” — It Is a Machinable Engineering Material
MC Nylon belongs to the family of engineering plastics and is often referred to as “metal-like plastic” in industry. This is not marketing hype, but a reflection of its core properties:
High mechanical strength and surface hardness
Excellent wear resistance and impact resistance
Fully machinable by turning, milling, drilling, and boring
In practice, MC Nylon behaves much closer to a structural material than to common plastics.
While material selection should always be verified by load and operating conditions, MC Nylon is widely used for bushings, wear pads, gears, rollers, and support blocks.
2) “Hard in the Right Way”: Load-Bearing Strength with Built-In Equipment Protection
A common question is:
“If strength is the goal, why not just use steel or bronze?”
This is where MC Nylon shows its real advantage—its hardness sits at a practical balance point for sliding and rotating interfaces.
Strong Enough to Carry Load
In many heavy-load, low-speed applications, MC Nylon provides sufficient compressive strength and structural stability without permanent deformation. It performs reliably in supporting and guiding roles.
Slightly Softer Than Metal — and That’s a Benefit
Consider a realistic operating scenario: dust or fine sand enters a bearing or bushing.
Steel shaft + bronze bushing
Both materials are hard. Trapped particles can score or scratch the shaft, leading to expensive repairs or downtime.
Steel shaft + MC Nylon bushing
Under appropriate load and clearance conditions, MC Nylon can absorb or embed small contaminants, or wear sacrificially first.
Result:
MC Nylon often acts as a controlled sacrificial component, protecting the more expensive shaft or core equipment. Replacing a bushing is far less costly than repairing a damaged shaft.
(Proper sealing and contamination control are still strongly recommended.)
3) Applications Where This Balance of Strength Matters Most
If your equipment faces the following conditions, MC Nylon is worth serious consideration:
Heavy Load, Low Speed
Examples:
Support blocks
Sliding pads
Low-speed rollers and guides in lifting or conveying systems
MC Nylon provides load capacity while reducing noise and overall system weight.
Limited or Inconsistent Lubrication
Metal friction pairs are prone to overheating, seizure, or scoring when lubrication is insufficient.
MC Nylon offers low friction and inherent self-lubricating characteristics, making it more forgiving in poorly lubricated or intermittently lubricated environments.
(Note: high-speed or continuous heavy-duty operation still requires proper thermal and wear evaluation.)
Force Transmission Without Surface Damage
In mold, leather, and assembly industries, nylon hammer heads or striking components are commonly used.
They transmit force effectively while minimizing surface damage to molds or finished parts.
Conclusion: Don’t Underestimate It Just Because It’s “Plastic”
MC Nylon was developed specifically for industrial use:
Strong enough to handle heavy work
Tough enough to resist wear
Yet forgiving enough to protect shafts and critical components
In many heavy-load, low-speed, and wear-sensitive applications, MC Nylon can be a cost-effective alternative to bronze or metal bushings—with additional benefits in noise reduction, maintenance cost, and component protection.
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